We describe a new amine-hardener that enables intrinsic thermally activated healing in epoxy-amine coatings. A hetero-Diels Alder (HDA) adduct bridges biosourced fatty acids and serves as the thermoreversible linker. We validated the thermal reversion of the adduct in solution and the HDA-containing diamine served as a drop-in replacement for commercial hardeners.
S. C. Rajappan, B. J. Davis, I. T. Dishner, T. L. Thornell, J. J. Peyrefitte and Y. C. Simon, Polym. Chem., 2022, 13, 741 DOI: 10.1039/D1PY00917F
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